*
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Dosis', sans-serif;
}

div {
    display: block;
}

body {
    background-color: #000;
}

.hero {
    display: grid;
    height: 100vh;
    grid-template-columns: 15% 1.5fr 1fr 15%;
    grid-template-rows: 50px 1fr;
    grid-template-areas:
    "nav nav nav nav"
    ". ios-dev title-col .";
    background-image: url("images/sky.jpg");
    background-position: center;
    background-size: cover;
    overflow: hidden;
}

.header {
    grid-area: nav;
    position: relative;
}

.ios-dev {
    grid-area: ios-dev;
    overflow: hidden;
    margin-top: 5%;
}

.iphone {
    background: transparent;
    max-width: 80%;
    object-fit: contain;
    vertical-align: middle;
    margin: 0px 10%;
}

.title-col {
    height: 40%;
    margin: 70% 0px auto 0px;
    grid-area: title-col;
}

.title-col h1 {
    font-weight: 900;
    font-size: 65px;
    font-size: 5vw;
    text-align: right;
    color: #fff;
}

.title-col hr {
    width: 40%;
    margin: 30px 0px 30px auto;
    border: 1.5px solid #fff;
}

nav {
    position: absolute;
    height: 50px;
    background-color: #0005;
    line-height: 50px;
}

nav ul {
    float: left;
    margin-left: 30px;
}

nav ul li {
    list-style-type: none;
    display: inline-block;
}

nav ul li:hover {
    text-decoration: underline;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    padding: 35px;
    font-size: calc(8px + 1vw);
}

hr {
    width: 100%;
    border: 1.5px solid #000;
}

.about {
    background-color: #fff;
    height: 400px;
    width: 100%;
}

@media only screen and (max-width: 550px) {
    .hero {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
        grid-template-areas:
        "nav"
        "ios-dev";
    }

    .title-col {
        display: none;
    }
}